[CentOS] Best mkfs.ext2 performance options on RAID5 in CentOS 4.2
jlb17 at duke.edu
Mon Oct 31 22:15:33 UTC 2005
On Mon, 31 Oct 2005 at 4:10pm, Sean Staats wrote
> I can't seem to get the read and write performance better than
> approximately 40MB/s on an ext2 file system. IMO, this is horrible
> performance for a 6-drive, hardware RAID 5 array. Please have a look at
> what I'm doing and let me know if anybody has any suggestions on how to
> improve the performance...
> System specs:
> 2 x 2.8GHz Xeons
> 6GB RAM
> 1 3ware 9500S-12
> 2 x 6-drive, RAID 5 arrays with a stripe size of 256KB. Each array is
> 2.3TB after formatting.
> ioscheduler set to use the deadline scheduler.
Make sure you are using the absolute latest firmware for the 3ware board
(2.08.00.005). There is a bad cache allocation bug in previous firmwares
that kills performance with more than one unit (as you have).
Department of Biomedical Engineering
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